exam Maths Puzzle Numerical Ability

2x>-6 and x-4<=3
solve and graph on a number line.

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exam Other Question

Biologists catch, mark and then release 356 fish. One week later, they catch 629 fish and of that group 85 are marked. Use the information to estimate the total population of fish in the lake. 7+2(3x-5)=8-3(2x+1)